Yoona ( Han-kok-gi : 윤아 , 1990 ni 5 goe?h 30 ji?t chhut-si ), pun-mia Im Yoon-ah ( Han-kok-gi : 임윤아 / 林潤? ), s? Han-kok e koa-chhiu kiam ian-oan, s? im-ga?k thoan-the Siau-lu Si-t?i e seng-oan.